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Fix whitespace issues.
This commit is contained in:
Ulrich Drepper
parent
fb084e5e80
commit
b8907dfd8b
@ -58,412 +58,412 @@ EALIGN (BP_SYM (memcpy), 5, 0)
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/* Get the SRC aligned to 8 bytes. */
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/* Get the SRC aligned to 8 bytes. */
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1: bf 31,2f
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1: bf 31,2f
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lbz 6,0(12)
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lbz 6,0(12)
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addi 12,12,1
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addi 12,12,1
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stb 6,0(3)
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stb 6,0(3)
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addi 3,3,1
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addi 3,3,1
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2: bf 30,4f
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2: bf 30,4f
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lhz 6,0(12)
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lhz 6,0(12)
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addi 12,12,2
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addi 12,12,2
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sth 6,0(3)
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sth 6,0(3)
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addi 3,3,2
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addi 3,3,2
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4: bf 29,0f
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4: bf 29,0f
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lwz 6,0(12)
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lwz 6,0(12)
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addi 12,12,4
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addi 12,12,4
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stw 6,0(3)
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stw 6,0(3)
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addi 3,3,4
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addi 3,3,4
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0:
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0:
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clrlwi 10,12,29 /* Check alignment of SRC again. */
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clrlwi 10,12,29 /* Check alignment of SRC again. */
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srwi 9,31,3 /* Number of full doublewords remaining. */
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srwi 9,31,3 /* Number of full doublewords remaining. */
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L(copy_GE_32_aligned_cont):
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L(copy_GE_32_aligned_cont):
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clrlwi 11,31,29
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clrlwi 11,31,29
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mtcrf 0x01,9
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mtcrf 0x01,9
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srwi 8,31,5
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srwi 8,31,5
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cmplwi cr1,9,4
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cmplwi cr1,9,4
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cmplwi cr6,11,0
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cmplwi cr6,11,0
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mr 11,12
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mr 11,12
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/* Copy 1~3 doublewords so the main loop starts
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/* Copy 1~3 doublewords so the main loop starts
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at a multiple of 32 bytes. */
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at a multiple of 32 bytes. */
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bf 30,1f
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bf 30,1f
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lfd 6,0(12)
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lfd 6,0(12)
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lfd 7,8(12)
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lfd 7,8(12)
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addi 11,12,16
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addi 11,12,16
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mtctr 8
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mtctr 8
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stfd 6,0(3)
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stfd 6,0(3)
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stfd 7,8(3)
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stfd 7,8(3)
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addi 10,3,16
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addi 10,3,16
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bf 31,4f
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bf 31,4f
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lfd 0,16(12)
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lfd 0,16(12)
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stfd 0,16(3)
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stfd 0,16(3)
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blt cr1,3f
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blt cr1,3f
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addi 11,12,24
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addi 11,12,24
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addi 10,3,24
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addi 10,3,24
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b 4f
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b 4f
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.align 4
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.align 4
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1: /* Copy 1 doubleword and set the counter. */
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1: /* Copy 1 doubleword and set the counter. */
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mr 10,3
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mr 10,3
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mtctr 8
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mtctr 8
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bf 31,4f
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bf 31,4f
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lfd 6,0(12)
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lfd 6,0(12)
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addi 11,12,8
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addi 11,12,8
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stfd 6,0(3)
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stfd 6,0(3)
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addi 10,3,8
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addi 10,3,8
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.align 4
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.align 4
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4: /* Main aligned copy loop. Copies 32-bytes at a time. */
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4: /* Main aligned copy loop. Copies 32-bytes at a time. */
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lfd 6,0(11)
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lfd 6,0(11)
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lfd 7,8(11)
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lfd 7,8(11)
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lfd 8,16(11)
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lfd 8,16(11)
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lfd 0,24(11)
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lfd 0,24(11)
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addi 11,11,32
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addi 11,11,32
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stfd 6,0(10)
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stfd 6,0(10)
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stfd 7,8(10)
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stfd 7,8(10)
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stfd 8,16(10)
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stfd 8,16(10)
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stfd 0,24(10)
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stfd 0,24(10)
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addi 10,10,32
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addi 10,10,32
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bdnz 4b
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bdnz 4b
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3:
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3:
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/* Check for tail bytes. */
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/* Check for tail bytes. */
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clrrwi 0,31,3
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clrrwi 0,31,3
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mtcrf 0x01,31
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mtcrf 0x01,31
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beq cr6,0f
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beq cr6,0f
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.L9:
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.L9:
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add 3,3,0
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add 3,3,0
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add 12,12,0
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add 12,12,0
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/* At this point we have a tail of 0-7 bytes and we know that the
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/* At this point we have a tail of 0-7 bytes and we know that the
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destination is doubleword-aligned. */
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destination is doubleword-aligned. */
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4: /* Copy 4 bytes. */
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4: /* Copy 4 bytes. */
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bf 29,2f
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bf 29,2f
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lwz 6,0(12)
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lwz 6,0(12)
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addi 12,12,4
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addi 12,12,4
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stw 6,0(3)
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stw 6,0(3)
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addi 3,3,4
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addi 3,3,4
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2: /* Copy 2 bytes. */
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2: /* Copy 2 bytes. */
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bf 30,1f
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bf 30,1f
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lhz 6,0(12)
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lhz 6,0(12)
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addi 12,12,2
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addi 12,12,2
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sth 6,0(3)
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sth 6,0(3)
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addi 3,3,2
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addi 3,3,2
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1: /* Copy 1 byte. */
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1: /* Copy 1 byte. */
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bf 31,0f
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bf 31,0f
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lbz 6,0(12)
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lbz 6,0(12)
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stb 6,0(3)
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stb 6,0(3)
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0: /* Return original DST pointer. */
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0: /* Return original DST pointer. */
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mr 3,30
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mr 3,30
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lwz 30,20(1)
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lwz 30,20(1)
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lwz 31,24(1)
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lwz 31,24(1)
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addi 1,1,32
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addi 1,1,32
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blr
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blr
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/* Handle copies of 0~31 bytes. */
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/* Handle copies of 0~31 bytes. */
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.align 4
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.align 4
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L(copy_LT_32):
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L(copy_LT_32):
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cmplwi cr6,5,8
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cmplwi cr6,5,8
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mr 12,4
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mr 12,4
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mtcrf 0x01,5
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mtcrf 0x01,5
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ble cr6,L(copy_LE_8)
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ble cr6,L(copy_LE_8)
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/* At least 9 bytes to go. */
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/* At least 9 bytes to go. */
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neg 8,4
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neg 8,4
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clrrwi 11,4,2
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clrrwi 11,4,2
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andi. 0,8,3
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andi. 0,8,3
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cmplwi cr1,5,16
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cmplwi cr1,5,16
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mr 10,5
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mr 10,5
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beq L(copy_LT_32_aligned)
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beq L(copy_LT_32_aligned)
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/* Force 4-bytes alignment for SRC. */
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/* Force 4-bytes alignment for SRC. */
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mtocrf 0x01,0
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mtocrf 0x01,0
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subf 10,0,5
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subf 10,0,5
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2: bf 30,1f
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2: bf 30,1f
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lhz 6,0(12)
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lhz 6,0(12)
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addi 12,12,2
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addi 12,12,2
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sth 6,0(3)
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sth 6,0(3)
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addi 3,3,2
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addi 3,3,2
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1: bf 31,L(end_4bytes_alignment)
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1: bf 31,L(end_4bytes_alignment)
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lbz 6,0(12)
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lbz 6,0(12)
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addi 12,12,1
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addi 12,12,1
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stb 6,0(3)
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stb 6,0(3)
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addi 3,3,1
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addi 3,3,1
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.align 4
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.align 4
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L(end_4bytes_alignment):
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L(end_4bytes_alignment):
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cmplwi cr1,10,16
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cmplwi cr1,10,16
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mtcrf 0x01,10
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mtcrf 0x01,10
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L(copy_LT_32_aligned):
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L(copy_LT_32_aligned):
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/* At least 6 bytes to go, and SRC is word-aligned. */
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/* At least 6 bytes to go, and SRC is word-aligned. */
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blt cr1,8f
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blt cr1,8f
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/* Copy 16 bytes. */
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/* Copy 16 bytes. */
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lwz 6,0(12)
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lwz 6,0(12)
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lwz 7,4(12)
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lwz 7,4(12)
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stw 6,0(3)
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stw 6,0(3)
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lwz 8,8(12)
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lwz 8,8(12)
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stw 7,4(3)
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stw 7,4(3)
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lwz 6,12(12)
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lwz 6,12(12)
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addi 12,12,16
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addi 12,12,16
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stw 8,8(3)
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stw 8,8(3)
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stw 6,12(3)
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stw 6,12(3)
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addi 3,3,16
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addi 3,3,16
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8: /* Copy 8 bytes. */
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8: /* Copy 8 bytes. */
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bf 28,4f
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bf 28,4f
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lwz 6,0(12)
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lwz 6,0(12)
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lwz 7,4(12)
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lwz 7,4(12)
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addi 12,12,8
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addi 12,12,8
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stw 6,0(3)
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stw 6,0(3)
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stw 7,4(3)
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stw 7,4(3)
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addi 3,3,8
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addi 3,3,8
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4: /* Copy 4 bytes. */
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4: /* Copy 4 bytes. */
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bf 29,2f
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bf 29,2f
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lwz 6,0(12)
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lwz 6,0(12)
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addi 12,12,4
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addi 12,12,4
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stw 6,0(3)
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stw 6,0(3)
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addi 3,3,4
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addi 3,3,4
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2: /* Copy 2-3 bytes. */
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2: /* Copy 2-3 bytes. */
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bf 30,1f
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bf 30,1f
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lhz 6,0(12)
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lhz 6,0(12)
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sth 6,0(3)
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sth 6,0(3)
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bf 31,0f
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bf 31,0f
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lbz 7,2(12)
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lbz 7,2(12)
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stb 7,2(3)
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stb 7,2(3)
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/* Return original DST pointer. */
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/* Return original DST pointer. */
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mr 3,30
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mr 3,30
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lwz 30,20(1)
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lwz 30,20(1)
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addi 1,1,32
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addi 1,1,32
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blr
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blr
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.align 4
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.align 4
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1: /* Copy 1 byte. */
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1: /* Copy 1 byte. */
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bf 31,0f
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bf 31,0f
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lbz 6,0(12)
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lbz 6,0(12)
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stb 6,0(3)
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stb 6,0(3)
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0: /* Return original DST pointer. */
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0: /* Return original DST pointer. */
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mr 3,30
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mr 3,30
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lwz 30,20(1)
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lwz 30,20(1)
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addi 1,1,32
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addi 1,1,32
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blr
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blr
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/* Handles copies of 0~8 bytes. */
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/* Handles copies of 0~8 bytes. */
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.align 4
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.align 4
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L(copy_LE_8):
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L(copy_LE_8):
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bne cr6,4f
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bne cr6,4f
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/* Though we could've used lfd/stfd here, they are still
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/* Though we could've used lfd/stfd here, they are still
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slow for unaligned cases. */
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slow for unaligned cases. */
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lwz 6,0(4)
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lwz 6,0(4)
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lwz 7,4(4)
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lwz 7,4(4)
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stw 6,0(3)
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stw 6,0(3)
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stw 7,4(3)
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stw 7,4(3)
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/* Return original DST pointer. */
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/* Return original DST pointer. */
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mr 3,30
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mr 3,30
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lwz 30,20(1)
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lwz 30,20(1)
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addi 1,1,32
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addi 1,1,32
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blr
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blr
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.align 4
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.align 4
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4: /* Copies 4~7 bytes. */
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4: /* Copies 4~7 bytes. */
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bf 29,2b
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bf 29,2b
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lwz 6,0(4)
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lwz 6,0(4)
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stw 6,0(3)
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stw 6,0(3)
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bf 30,5f
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bf 30,5f
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lhz 7,4(4)
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lhz 7,4(4)
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sth 7,4(3)
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sth 7,4(3)
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bf 31,0f
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bf 31,0f
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lbz 8,6(4)
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lbz 8,6(4)
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stb 8,6(3)
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stb 8,6(3)
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/* Return original DST pointer. */
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/* Return original DST pointer. */
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mr 3,30
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mr 3,30
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lwz 30,20(1)
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lwz 30,20(1)
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addi 1,1,32
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addi 1,1,32
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blr
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blr
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.align 4
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.align 4
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5: /* Copy 1 byte. */
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5: /* Copy 1 byte. */
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bf 31,0f
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bf 31,0f
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lbz 6,4(4)
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lbz 6,4(4)
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stb 6,4(3)
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stb 6,4(3)
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0: /* Return original DST pointer. */
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0: /* Return original DST pointer. */
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mr 3,30
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mr 3,30
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lwz 30,20(1)
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lwz 30,20(1)
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addi 1,1,32
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addi 1,1,32
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blr
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blr
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/* Handle copies of 32+ bytes where DST is aligned (to quadword) but
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/* Handle copies of 32+ bytes where DST is aligned (to quadword) but
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SRC is not. Use aligned quadword loads from SRC, shifted to realign
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SRC is not. Use aligned quadword loads from SRC, shifted to realign
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the data, allowing for aligned DST stores. */
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the data, allowing for aligned DST stores. */
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.align 4
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.align 4
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L(copy_GE_32_unaligned):
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L(copy_GE_32_unaligned):
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andi. 11,3,15 /* Check alignment of DST. */
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andi. 11,3,15 /* Check alignment of DST. */
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clrlwi 0,0,28 /* Number of bytes until the 1st
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clrlwi 0,0,28 /* Number of bytes until the 1st
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quadword of DST. */
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quadword of DST. */
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srwi 9,5,4 /* Number of full quadwords remaining. */
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srwi 9,5,4 /* Number of full quadwords remaining. */
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beq L(copy_GE_32_unaligned_cont)
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beq L(copy_GE_32_unaligned_cont)
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/* SRC is not quadword aligned, get it aligned. */
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/* SRC is not quadword aligned, get it aligned. */
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mtcrf 0x01,0
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mtcrf 0x01,0
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subf 31,0,5
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subf 31,0,5
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/* Vector instructions work best when proper alignment (16-bytes)
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/* Vector instructions work best when proper alignment (16-bytes)
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is present. Move 0~15 bytes as needed to get DST quadword-aligned. */
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is present. Move 0~15 bytes as needed to get DST quadword-aligned. */
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1: /* Copy 1 byte. */
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1: /* Copy 1 byte. */
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bf 31,2f
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bf 31,2f
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lbz 6,0(12)
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lbz 6,0(12)
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addi 12,12,1
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addi 12,12,1
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stb 6,0(3)
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stb 6,0(3)
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addi 3,3,1
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addi 3,3,1
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2: /* Copy 2 bytes. */
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2: /* Copy 2 bytes. */
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bf 30,4f
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bf 30,4f
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lhz 6,0(12)
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lhz 6,0(12)
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addi 12,12,2
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addi 12,12,2
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sth 6,0(3)
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sth 6,0(3)
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addi 3,3,2
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addi 3,3,2
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4: /* Copy 4 bytes. */
|
4: /* Copy 4 bytes. */
|
||||||
bf 29,8f
|
bf 29,8f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
8: /* Copy 8 bytes. */
|
8: /* Copy 8 bytes. */
|
||||||
bf 28,0f
|
bf 28,0f
|
||||||
|
|
||||||
lfd 6,0(12)
|
lfd 6,0(12)
|
||||||
addi 12,12,8
|
addi 12,12,8
|
||||||
stfd 6,0(3)
|
stfd 6,0(3)
|
||||||
addi 3,3,8
|
addi 3,3,8
|
||||||
0:
|
0:
|
||||||
clrlwi 10,12,28 /* Check alignment of SRC. */
|
clrlwi 10,12,28 /* Check alignment of SRC. */
|
||||||
srdi 9,31,4 /* Number of full quadwords remaining. */
|
srdi 9,31,4 /* Number of full quadwords remaining. */
|
||||||
|
|
||||||
/* The proper alignment is present, it is OK to copy the bytes now. */
|
/* The proper alignment is present, it is OK to copy the bytes now. */
|
||||||
L(copy_GE_32_unaligned_cont):
|
L(copy_GE_32_unaligned_cont):
|
||||||
|
|
||||||
/* Setup two indexes to speed up the indexed vector operations. */
|
/* Setup two indexes to speed up the indexed vector operations. */
|
||||||
clrlwi 11,31,28
|
clrlwi 11,31,28
|
||||||
li 6,16 /* Index for 16-bytes offsets. */
|
li 6,16 /* Index for 16-bytes offsets. */
|
||||||
li 7,32 /* Index for 32-bytes offsets. */
|
li 7,32 /* Index for 32-bytes offsets. */
|
||||||
cmplwi cr1,11,0
|
cmplwi cr1,11,0
|
||||||
srdi 8,31,5 /* Setup the loop counter. */
|
srdi 8,31,5 /* Setup the loop counter. */
|
||||||
mr 10,3
|
mr 10,3
|
||||||
mr 11,12
|
mr 11,12
|
||||||
mtcrf 0x01,9
|
mtcrf 0x01,9
|
||||||
cmplwi cr6,9,1
|
cmplwi cr6,9,1
|
||||||
lvsl 5,0,12
|
lvsl 5,0,12
|
||||||
lvx 3,0,12
|
lvx 3,0,12
|
||||||
bf 31,L(setup_unaligned_loop)
|
bf 31,L(setup_unaligned_loop)
|
||||||
|
|
||||||
/* Copy another 16 bytes to align to 32-bytes due to the loop . */
|
/* Copy another 16 bytes to align to 32-bytes due to the loop . */
|
||||||
lvx 4,12,6
|
lvx 4,12,6
|
||||||
vperm 6,3,4,5
|
vperm 6,3,4,5
|
||||||
addi 11,12,16
|
addi 11,12,16
|
||||||
addi 10,3,16
|
addi 10,3,16
|
||||||
stvx 6,0,3
|
stvx 6,0,3
|
||||||
vor 3,4,4
|
vor 3,4,4
|
||||||
|
|
||||||
L(setup_unaligned_loop):
|
L(setup_unaligned_loop):
|
||||||
mtctr 8
|
mtctr 8
|
||||||
ble cr6,L(end_unaligned_loop)
|
ble cr6,L(end_unaligned_loop)
|
||||||
|
|
||||||
/* Copy 32 bytes at a time using vector instructions. */
|
/* Copy 32 bytes at a time using vector instructions. */
|
||||||
.align 4
|
.align 4
|
||||||
L(unaligned_loop):
|
L(unaligned_loop):
|
||||||
|
|
||||||
/* Note: vr6/vr10 may contain data that was already copied,
|
/* Note: vr6/vr10 may contain data that was already copied,
|
||||||
but in order to get proper alignment, we may have to copy
|
but in order to get proper alignment, we may have to copy
|
||||||
some portions again. This is faster than having unaligned
|
some portions again. This is faster than having unaligned
|
||||||
vector instructions though. */
|
vector instructions though. */
|
||||||
|
|
||||||
lvx 4,11,6 /* vr4 = r11+16. */
|
lvx 4,11,6 /* vr4 = r11+16. */
|
||||||
vperm 6,3,4,5 /* Merge the correctly-aligned portions
|
vperm 6,3,4,5 /* Merge the correctly-aligned portions
|
||||||
of vr3/vr4 into vr6. */
|
of vr3/vr4 into vr6. */
|
||||||
lvx 3,11,7 /* vr3 = r11+32. */
|
lvx 3,11,7 /* vr3 = r11+32. */
|
||||||
vperm 10,4,3,5 /* Merge the correctly-aligned portions
|
vperm 10,4,3,5 /* Merge the correctly-aligned portions
|
||||||
of vr3/vr4 into vr10. */
|
of vr3/vr4 into vr10. */
|
||||||
addi 11,11,32
|
addi 11,11,32
|
||||||
stvx 6,0,10
|
stvx 6,0,10
|
||||||
stvx 10,10,6
|
stvx 10,10,6
|
||||||
addi 10,10,32
|
addi 10,10,32
|
||||||
|
|
||||||
bdnz L(unaligned_loop)
|
bdnz L(unaligned_loop)
|
||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
L(end_unaligned_loop):
|
L(end_unaligned_loop):
|
||||||
|
|
||||||
/* Check for tail bytes. */
|
/* Check for tail bytes. */
|
||||||
clrrwi 0,31,4
|
clrrwi 0,31,4
|
||||||
mtcrf 0x01,31
|
mtcrf 0x01,31
|
||||||
beq cr1,0f
|
beq cr1,0f
|
||||||
|
|
||||||
add 3,3,0
|
add 3,3,0
|
||||||
add 12,12,0
|
add 12,12,0
|
||||||
|
|
||||||
/* We have 1~15 tail bytes to copy, and DST is quadword aligned. */
|
/* We have 1~15 tail bytes to copy, and DST is quadword aligned. */
|
||||||
8: /* Copy 8 bytes. */
|
8: /* Copy 8 bytes. */
|
||||||
bf 28,4f
|
bf 28,4f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
lwz 7,4(12)
|
lwz 7,4(12)
|
||||||
addi 12,12,8
|
addi 12,12,8
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
stw 7,4(3)
|
stw 7,4(3)
|
||||||
addi 3,3,8
|
addi 3,3,8
|
||||||
4: /* Copy 4 bytes. */
|
4: /* Copy 4 bytes. */
|
||||||
bf 29,2f
|
bf 29,2f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
2: /* Copy 2~3 bytes. */
|
2: /* Copy 2~3 bytes. */
|
||||||
bf 30,1f
|
bf 30,1f
|
||||||
|
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
addi 12,12,2
|
addi 12,12,2
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
addi 3,3,2
|
addi 3,3,2
|
||||||
1: /* Copy 1 byte. */
|
1: /* Copy 1 byte. */
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
|
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
0: /* Return original DST pointer. */
|
0: /* Return original DST pointer. */
|
||||||
mr 3,30
|
mr 3,30
|
||||||
lwz 30,20(1)
|
lwz 30,20(1)
|
||||||
lwz 31,24(1)
|
lwz 31,24(1)
|
||||||
addi 1,1,32
|
addi 1,1,32
|
||||||
blr
|
blr
|
||||||
|
|
||||||
END (BP_SYM (memcpy))
|
END (BP_SYM (memcpy))
|
||||||
libc_hidden_builtin_def (memcpy)
|
libc_hidden_builtin_def (memcpy)
|
||||||
|
|||||||
@ -58,23 +58,23 @@ EALIGN (BP_SYM (memcpy), 5, 0)
|
|||||||
/* Get the SRC aligned to 8 bytes. */
|
/* Get the SRC aligned to 8 bytes. */
|
||||||
|
|
||||||
1: bf 31,2f
|
1: bf 31,2f
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
addi 12,12,1
|
addi 12,12,1
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
addi 3,3,1
|
addi 3,3,1
|
||||||
2: bf 30,4f
|
2: bf 30,4f
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
addi 12,12,2
|
addi 12,12,2
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
addi 3,3,2
|
addi 3,3,2
|
||||||
4: bf 29,0f
|
4: bf 29,0f
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
0:
|
0:
|
||||||
clrldi 10,12,61 /* Check alignment of SRC again. */
|
clrldi 10,12,61 /* Check alignment of SRC again. */
|
||||||
srdi 9,31,3 /* Number of full doublewords remaining. */
|
srdi 9,31,3 /* Number of full doublewords remaining. */
|
||||||
|
|
||||||
L(copy_GE_32_aligned_cont):
|
L(copy_GE_32_aligned_cont):
|
||||||
|
|
||||||
@ -107,343 +107,343 @@ L(copy_GE_32_aligned_cont):
|
|||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
1: /* Copy 1 doubleword and set the counter. */
|
1: /* Copy 1 doubleword and set the counter. */
|
||||||
mr 10,3
|
mr 10,3
|
||||||
mtctr 8
|
mtctr 8
|
||||||
bf 31,4f
|
bf 31,4f
|
||||||
ld 6,0(12)
|
ld 6,0(12)
|
||||||
addi 11,12,8
|
addi 11,12,8
|
||||||
std 6,0(3)
|
std 6,0(3)
|
||||||
addi 10,3,8
|
addi 10,3,8
|
||||||
|
|
||||||
/* Main aligned copy loop. Copies 32-bytes at a time. */
|
/* Main aligned copy loop. Copies 32-bytes at a time. */
|
||||||
.align 4
|
.align 4
|
||||||
4:
|
4:
|
||||||
ld 6,0(11)
|
ld 6,0(11)
|
||||||
ld 7,8(11)
|
ld 7,8(11)
|
||||||
ld 8,16(11)
|
ld 8,16(11)
|
||||||
ld 0,24(11)
|
ld 0,24(11)
|
||||||
addi 11,11,32
|
addi 11,11,32
|
||||||
|
|
||||||
std 6,0(10)
|
std 6,0(10)
|
||||||
std 7,8(10)
|
std 7,8(10)
|
||||||
std 8,16(10)
|
std 8,16(10)
|
||||||
std 0,24(10)
|
std 0,24(10)
|
||||||
addi 10,10,32
|
addi 10,10,32
|
||||||
bdnz 4b
|
bdnz 4b
|
||||||
3:
|
3:
|
||||||
|
|
||||||
/* Check for tail bytes. */
|
/* Check for tail bytes. */
|
||||||
rldicr 0,31,0,60
|
rldicr 0,31,0,60
|
||||||
mtcrf 0x01,31
|
mtcrf 0x01,31
|
||||||
beq cr6,0f
|
beq cr6,0f
|
||||||
|
|
||||||
.L9:
|
.L9:
|
||||||
add 3,3,0
|
add 3,3,0
|
||||||
add 12,12,0
|
add 12,12,0
|
||||||
|
|
||||||
/* At this point we have a tail of 0-7 bytes and we know that the
|
/* At this point we have a tail of 0-7 bytes and we know that the
|
||||||
destination is doubleword-aligned. */
|
destination is doubleword-aligned. */
|
||||||
4: /* Copy 4 bytes. */
|
4: /* Copy 4 bytes. */
|
||||||
bf 29,2f
|
bf 29,2f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
2: /* Copy 2 bytes. */
|
2: /* Copy 2 bytes. */
|
||||||
bf 30,1f
|
bf 30,1f
|
||||||
|
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
addi 12,12,2
|
addi 12,12,2
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
addi 3,3,2
|
addi 3,3,2
|
||||||
1: /* Copy 1 byte. */
|
1: /* Copy 1 byte. */
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
|
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
0: /* Return original DST pointer. */
|
0: /* Return original DST pointer. */
|
||||||
ld 31,-8(1)
|
ld 31,-8(1)
|
||||||
ld 3,-16(1)
|
ld 3,-16(1)
|
||||||
blr
|
blr
|
||||||
|
|
||||||
/* Handle copies of 0~31 bytes. */
|
/* Handle copies of 0~31 bytes. */
|
||||||
.align 4
|
.align 4
|
||||||
L(copy_LT_32):
|
L(copy_LT_32):
|
||||||
cmpldi cr6,5,8
|
cmpldi cr6,5,8
|
||||||
mr 12,4
|
mr 12,4
|
||||||
mtcrf 0x01,5
|
mtcrf 0x01,5
|
||||||
ble cr6,L(copy_LE_8)
|
ble cr6,L(copy_LE_8)
|
||||||
|
|
||||||
/* At least 9 bytes to go. */
|
/* At least 9 bytes to go. */
|
||||||
neg 8,4
|
neg 8,4
|
||||||
clrrdi 11,4,2
|
clrrdi 11,4,2
|
||||||
andi. 0,8,3
|
andi. 0,8,3
|
||||||
cmpldi cr1,5,16
|
cmpldi cr1,5,16
|
||||||
mr 10,5
|
mr 10,5
|
||||||
beq L(copy_LT_32_aligned)
|
beq L(copy_LT_32_aligned)
|
||||||
|
|
||||||
/* Force 4-bytes alignment for SRC. */
|
/* Force 4-bytes alignment for SRC. */
|
||||||
mtocrf 0x01,0
|
mtocrf 0x01,0
|
||||||
subf 10,0,5
|
subf 10,0,5
|
||||||
2: bf 30,1f
|
2: bf 30,1f
|
||||||
|
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
addi 12,12,2
|
addi 12,12,2
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
addi 3,3,2
|
addi 3,3,2
|
||||||
1: bf 31,L(end_4bytes_alignment)
|
1: bf 31,L(end_4bytes_alignment)
|
||||||
|
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
addi 12,12,1
|
addi 12,12,1
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
addi 3,3,1
|
addi 3,3,1
|
||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
L(end_4bytes_alignment):
|
L(end_4bytes_alignment):
|
||||||
cmpldi cr1,10,16
|
cmpldi cr1,10,16
|
||||||
mtcrf 0x01,10
|
mtcrf 0x01,10
|
||||||
|
|
||||||
L(copy_LT_32_aligned):
|
L(copy_LT_32_aligned):
|
||||||
/* At least 6 bytes to go, and SRC is word-aligned. */
|
/* At least 6 bytes to go, and SRC is word-aligned. */
|
||||||
blt cr1,8f
|
blt cr1,8f
|
||||||
|
|
||||||
/* Copy 16 bytes. */
|
/* Copy 16 bytes. */
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
lwz 7,4(12)
|
lwz 7,4(12)
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
lwz 8,8(12)
|
lwz 8,8(12)
|
||||||
stw 7,4(3)
|
stw 7,4(3)
|
||||||
lwz 6,12(12)
|
lwz 6,12(12)
|
||||||
addi 12,12,16
|
addi 12,12,16
|
||||||
stw 8,8(3)
|
stw 8,8(3)
|
||||||
stw 6,12(3)
|
stw 6,12(3)
|
||||||
addi 3,3,16
|
addi 3,3,16
|
||||||
8: /* Copy 8 bytes. */
|
8: /* Copy 8 bytes. */
|
||||||
bf 28,4f
|
bf 28,4f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
lwz 7,4(12)
|
lwz 7,4(12)
|
||||||
addi 12,12,8
|
addi 12,12,8
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
stw 7,4(3)
|
stw 7,4(3)
|
||||||
addi 3,3,8
|
addi 3,3,8
|
||||||
4: /* Copy 4 bytes. */
|
4: /* Copy 4 bytes. */
|
||||||
bf 29,2f
|
bf 29,2f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
2: /* Copy 2-3 bytes. */
|
2: /* Copy 2-3 bytes. */
|
||||||
bf 30,1f
|
bf 30,1f
|
||||||
|
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
lbz 7,2(12)
|
lbz 7,2(12)
|
||||||
stb 7,2(3)
|
stb 7,2(3)
|
||||||
ld 3,-16(1)
|
ld 3,-16(1)
|
||||||
blr
|
blr
|
||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
1: /* Copy 1 byte. */
|
1: /* Copy 1 byte. */
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
|
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
0: /* Return original DST pointer. */
|
0: /* Return original DST pointer. */
|
||||||
ld 3,-16(1)
|
ld 3,-16(1)
|
||||||
blr
|
blr
|
||||||
|
|
||||||
/* Handles copies of 0~8 bytes. */
|
/* Handles copies of 0~8 bytes. */
|
||||||
.align 4
|
.align 4
|
||||||
L(copy_LE_8):
|
L(copy_LE_8):
|
||||||
bne cr6,4f
|
bne cr6,4f
|
||||||
|
|
||||||
/* Though we could've used ld/std here, they are still
|
/* Though we could've used ld/std here, they are still
|
||||||
slow for unaligned cases. */
|
slow for unaligned cases. */
|
||||||
|
|
||||||
lwz 6,0(4)
|
lwz 6,0(4)
|
||||||
lwz 7,4(4)
|
lwz 7,4(4)
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
stw 7,4(3)
|
stw 7,4(3)
|
||||||
ld 3,-16(1) /* Return original DST pointers. */
|
ld 3,-16(1) /* Return original DST pointers. */
|
||||||
blr
|
blr
|
||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
4: /* Copies 4~7 bytes. */
|
4: /* Copies 4~7 bytes. */
|
||||||
bf 29,2b
|
bf 29,2b
|
||||||
|
|
||||||
lwz 6,0(4)
|
lwz 6,0(4)
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
bf 30,5f
|
bf 30,5f
|
||||||
lhz 7,4(4)
|
lhz 7,4(4)
|
||||||
sth 7,4(3)
|
sth 7,4(3)
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
lbz 8,6(4)
|
lbz 8,6(4)
|
||||||
stb 8,6(3)
|
stb 8,6(3)
|
||||||
ld 3,-16(1)
|
ld 3,-16(1)
|
||||||
blr
|
blr
|
||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
5: /* Copy 1 byte. */
|
5: /* Copy 1 byte. */
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
|
|
||||||
lbz 6,4(4)
|
lbz 6,4(4)
|
||||||
stb 6,4(3)
|
stb 6,4(3)
|
||||||
|
|
||||||
0: /* Return original DST pointer. */
|
0: /* Return original DST pointer. */
|
||||||
ld 3,-16(1)
|
ld 3,-16(1)
|
||||||
blr
|
blr
|
||||||
|
|
||||||
/* Handle copies of 32+ bytes where DST is aligned (to quadword) but
|
/* Handle copies of 32+ bytes where DST is aligned (to quadword) but
|
||||||
SRC is not. Use aligned quadword loads from SRC, shifted to realign
|
SRC is not. Use aligned quadword loads from SRC, shifted to realign
|
||||||
the data, allowing for aligned DST stores. */
|
the data, allowing for aligned DST stores. */
|
||||||
.align 4
|
.align 4
|
||||||
L(copy_GE_32_unaligned):
|
L(copy_GE_32_unaligned):
|
||||||
clrldi 0,0,60 /* Number of bytes until the 1st
|
clrldi 0,0,60 /* Number of bytes until the 1st
|
||||||
quadword. */
|
quadword. */
|
||||||
andi. 11,3,15 /* Check alignment of DST (against
|
andi. 11,3,15 /* Check alignment of DST (against
|
||||||
quadwords). */
|
quadwords). */
|
||||||
srdi 9,5,4 /* Number of full quadwords remaining. */
|
srdi 9,5,4 /* Number of full quadwords remaining. */
|
||||||
|
|
||||||
beq L(copy_GE_32_unaligned_cont)
|
beq L(copy_GE_32_unaligned_cont)
|
||||||
|
|
||||||
/* SRC is not quadword aligned, get it aligned. */
|
/* SRC is not quadword aligned, get it aligned. */
|
||||||
|
|
||||||
mtcrf 0x01,0
|
mtcrf 0x01,0
|
||||||
subf 31,0,5
|
subf 31,0,5
|
||||||
|
|
||||||
/* Vector instructions work best when proper alignment (16-bytes)
|
/* Vector instructions work best when proper alignment (16-bytes)
|
||||||
is present. Move 0~15 bytes as needed to get DST quadword-aligned. */
|
is present. Move 0~15 bytes as needed to get DST quadword-aligned. */
|
||||||
1: /* Copy 1 byte. */
|
1: /* Copy 1 byte. */
|
||||||
bf 31,2f
|
bf 31,2f
|
||||||
|
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
addi 12,12,1
|
addi 12,12,1
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
addi 3,3,1
|
addi 3,3,1
|
||||||
2: /* Copy 2 bytes. */
|
2: /* Copy 2 bytes. */
|
||||||
bf 30,4f
|
bf 30,4f
|
||||||
|
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
addi 12,12,2
|
addi 12,12,2
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
addi 3,3,2
|
addi 3,3,2
|
||||||
4: /* Copy 4 bytes. */
|
4: /* Copy 4 bytes. */
|
||||||
bf 29,8f
|
bf 29,8f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
8: /* Copy 8 bytes. */
|
8: /* Copy 8 bytes. */
|
||||||
bf 28,0f
|
bf 28,0f
|
||||||
|
|
||||||
ld 6,0(12)
|
ld 6,0(12)
|
||||||
addi 12,12,8
|
addi 12,12,8
|
||||||
std 6,0(3)
|
std 6,0(3)
|
||||||
addi 3,3,8
|
addi 3,3,8
|
||||||
0:
|
0:
|
||||||
clrldi 10,12,60 /* Check alignment of SRC. */
|
clrldi 10,12,60 /* Check alignment of SRC. */
|
||||||
srdi 9,31,4 /* Number of full quadwords remaining. */
|
srdi 9,31,4 /* Number of full quadwords remaining. */
|
||||||
|
|
||||||
/* The proper alignment is present, it is OK to copy the bytes now. */
|
/* The proper alignment is present, it is OK to copy the bytes now. */
|
||||||
L(copy_GE_32_unaligned_cont):
|
L(copy_GE_32_unaligned_cont):
|
||||||
|
|
||||||
/* Setup two indexes to speed up the indexed vector operations. */
|
/* Setup two indexes to speed up the indexed vector operations. */
|
||||||
clrldi 11,31,60
|
clrldi 11,31,60
|
||||||
li 6,16 /* Index for 16-bytes offsets. */
|
li 6,16 /* Index for 16-bytes offsets. */
|
||||||
li 7,32 /* Index for 32-bytes offsets. */
|
li 7,32 /* Index for 32-bytes offsets. */
|
||||||
cmpldi cr1,11,0
|
cmpldi cr1,11,0
|
||||||
srdi 8,31,5 /* Setup the loop counter. */
|
srdi 8,31,5 /* Setup the loop counter. */
|
||||||
mr 10,3
|
mr 10,3
|
||||||
mr 11,12
|
mr 11,12
|
||||||
mtcrf 0x01,9
|
mtcrf 0x01,9
|
||||||
cmpldi cr6,9,1
|
cmpldi cr6,9,1
|
||||||
lvsl 5,0,12
|
lvsl 5,0,12
|
||||||
lvx 3,0,12
|
lvx 3,0,12
|
||||||
bf 31,L(setup_unaligned_loop)
|
bf 31,L(setup_unaligned_loop)
|
||||||
|
|
||||||
/* Copy another 16 bytes to align to 32-bytes due to the loop . */
|
/* Copy another 16 bytes to align to 32-bytes due to the loop . */
|
||||||
lvx 4,12,6
|
lvx 4,12,6
|
||||||
vperm 6,3,4,5
|
vperm 6,3,4,5
|
||||||
addi 11,12,16
|
addi 11,12,16
|
||||||
addi 10,3,16
|
addi 10,3,16
|
||||||
stvx 6,0,3
|
stvx 6,0,3
|
||||||
vor 3,4,4
|
vor 3,4,4
|
||||||
|
|
||||||
L(setup_unaligned_loop):
|
L(setup_unaligned_loop):
|
||||||
mtctr 8
|
mtctr 8
|
||||||
ble cr6,L(end_unaligned_loop)
|
ble cr6,L(end_unaligned_loop)
|
||||||
|
|
||||||
/* Copy 32 bytes at a time using vector instructions. */
|
/* Copy 32 bytes at a time using vector instructions. */
|
||||||
.align 4
|
.align 4
|
||||||
L(unaligned_loop):
|
L(unaligned_loop):
|
||||||
|
|
||||||
/* Note: vr6/vr10 may contain data that was already copied,
|
/* Note: vr6/vr10 may contain data that was already copied,
|
||||||
but in order to get proper alignment, we may have to copy
|
but in order to get proper alignment, we may have to copy
|
||||||
some portions again. This is faster than having unaligned
|
some portions again. This is faster than having unaligned
|
||||||
vector instructions though. */
|
vector instructions though. */
|
||||||
|
|
||||||
lvx 4,11,6 /* vr4 = r11+16. */
|
lvx 4,11,6 /* vr4 = r11+16. */
|
||||||
vperm 6,3,4,5 /* Merge the correctly-aligned portions
|
vperm 6,3,4,5 /* Merge the correctly-aligned portions
|
||||||
of vr3/vr4 into vr6. */
|
of vr3/vr4 into vr6. */
|
||||||
lvx 3,11,7 /* vr3 = r11+32. */
|
lvx 3,11,7 /* vr3 = r11+32. */
|
||||||
vperm 10,4,3,5 /* Merge the correctly-aligned portions
|
vperm 10,4,3,5 /* Merge the correctly-aligned portions
|
||||||
of vr3/vr4 into vr10. */
|
of vr3/vr4 into vr10. */
|
||||||
addi 11,11,32
|
addi 11,11,32
|
||||||
stvx 6,0,10
|
stvx 6,0,10
|
||||||
stvx 10,10,6
|
stvx 10,10,6
|
||||||
addi 10,10,32
|
addi 10,10,32
|
||||||
|
|
||||||
bdnz L(unaligned_loop)
|
bdnz L(unaligned_loop)
|
||||||
|
|
||||||
.align 4
|
.align 4
|
||||||
L(end_unaligned_loop):
|
L(end_unaligned_loop):
|
||||||
|
|
||||||
/* Check for tail bytes. */
|
/* Check for tail bytes. */
|
||||||
rldicr 0,31,0,59
|
rldicr 0,31,0,59
|
||||||
mtcrf 0x01,31
|
mtcrf 0x01,31
|
||||||
beq cr1,0f
|
beq cr1,0f
|
||||||
|
|
||||||
add 3,3,0
|
add 3,3,0
|
||||||
add 12,12,0
|
add 12,12,0
|
||||||
|
|
||||||
/* We have 1~15 tail bytes to copy, and DST is quadword aligned. */
|
/* We have 1~15 tail bytes to copy, and DST is quadword aligned. */
|
||||||
8: /* Copy 8 bytes. */
|
8: /* Copy 8 bytes. */
|
||||||
bf 28,4f
|
bf 28,4f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
lwz 7,4(12)
|
lwz 7,4(12)
|
||||||
addi 12,12,8
|
addi 12,12,8
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
stw 7,4(3)
|
stw 7,4(3)
|
||||||
addi 3,3,8
|
addi 3,3,8
|
||||||
4: /* Copy 4 bytes. */
|
4: /* Copy 4 bytes. */
|
||||||
bf 29,2f
|
bf 29,2f
|
||||||
|
|
||||||
lwz 6,0(12)
|
lwz 6,0(12)
|
||||||
addi 12,12,4
|
addi 12,12,4
|
||||||
stw 6,0(3)
|
stw 6,0(3)
|
||||||
addi 3,3,4
|
addi 3,3,4
|
||||||
2: /* Copy 2~3 bytes. */
|
2: /* Copy 2~3 bytes. */
|
||||||
bf 30,1f
|
bf 30,1f
|
||||||
|
|
||||||
lhz 6,0(12)
|
lhz 6,0(12)
|
||||||
addi 12,12,2
|
addi 12,12,2
|
||||||
sth 6,0(3)
|
sth 6,0(3)
|
||||||
addi 3,3,2
|
addi 3,3,2
|
||||||
1: /* Copy 1 byte. */
|
1: /* Copy 1 byte. */
|
||||||
bf 31,0f
|
bf 31,0f
|
||||||
|
|
||||||
lbz 6,0(12)
|
lbz 6,0(12)
|
||||||
stb 6,0(3)
|
stb 6,0(3)
|
||||||
0: /* Return original DST pointer. */
|
0: /* Return original DST pointer. */
|
||||||
ld 31,-8(1)
|
ld 31,-8(1)
|
||||||
ld 3,-16(1)
|
ld 3,-16(1)
|
||||||
blr
|
blr
|
||||||
|
|
||||||
END_GEN_TB (BP_SYM (memcpy),TB_TOCLESS)
|
END_GEN_TB (BP_SYM (memcpy),TB_TOCLESS)
|
||||||
libc_hidden_builtin_def (memcpy)
|
libc_hidden_builtin_def (memcpy)
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user